hi guys first post noob im afraid. iv followed the emperors guide to the letter for installing wiigator gamma however I previously had beta on. now iv used wii dumper over wifi to get an iso of guitar hero 3 pal. and then burt it with imgburn onto a verbatim dvd-.. it doesn't load just get a black screen. however my backups of rock band 2 and world tour work fine, I didn't back them up though. any ideas?